CN113050907B - Image display device, power feeding system, and power feeding method for image display device - Google Patents

Image display device, power feeding system, and power feeding method for image display device Download PDF

Info

Publication number
CN113050907B
CN113050907B CN202011560815.7A CN202011560815A CN113050907B CN 113050907 B CN113050907 B CN 113050907B CN 202011560815 A CN202011560815 A CN 202011560815A CN 113050907 B CN113050907 B CN 113050907B
Authority
CN
China
Prior art keywords
interface
power
image display
battery
interfaces
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202011560815.7A
Other languages
Chinese (zh)
Other versions
CN113050907A (en
Inventor
藤卷由贵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Publication of CN113050907A publication Critical patent/CN113050907A/en
Application granted granted Critical
Publication of CN113050907B publication Critical patent/CN113050907B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/18—Packaging or power distribution
    • G06F1/189—Power distribution
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/163—Wearable computers, e.g. on a belt
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1632—External expansion units, e.g. docking stations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/263—Arrangements for using multiple switchable power supplies, e.g. battery and AC
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
    • G06F3/012—Head tracking input arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
    • G06F3/013—Eye tracking input arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16—Sound input; Sound output
    • G06F3/162—Interface to dedicated audio devices, e.g. audio drivers, interface to CODECs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16—Sound input; Sound output
    • G06F3/167—Audio in a user interface, e.g. using voice commands for navigating, audio feedback
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B2027/0178—Eyeglass type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Power Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Multimedia (AREA)
  • Optics & Photonics (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

An image display device, a power feeding system, and a power feeding method for an image display device. Feeding to the internal battery of the device having a plurality of ports is appropriately performed. The control device (300) comprises: a 1 st interface (510) capable of transmitting an image signal and receiving power; a2 nd interface (a 520) and a2 nd interface (B530) capable of receiving electric power; detection circuits (513, 523, and 533) that detect connection of an external device; an internal battery (341); and a CO control unit (310) that charges the internal battery (341) with power supplied from the external device connected to the 1 st interface (510) when it is detected that at least one of the 1 st interface (510) and the 2 nd interface (A520) and the 2 nd interface (B530) is connected to the external device and the connected device is operable as a supply terminal.

Description

Image display device, power feeding system, and power feeding method for image display device
Technical Field
The invention relates to an image display device, a power feeding system and a power feeding method of the image display device.
Background
In recent years, data communication buses such as USB have been increasingly used not only for data communication but also for power reception. Patent document 1 discloses an information processing apparatus that performs power feeding suitable for a power feeding target device.
Patent document 1: japanese patent laid-open publication No. 2011-34601
Disclosure of Invention
Problems to be solved by the invention
The following is assumed: the image display device is provided with a plurality of ports, and is connected to a plurality of external devices, and performs data communication and power supply to the plurality of external devices. When a plurality of ports of an image display device are connected to an external device and power is supplied from the connected external device, a short circuit may occur in the case where a plurality of external devices are connected to an internal battery included in the image display device, and power supply cannot be performed properly.
Means for solving the problems
One aspect for solving the above-described problems is an image display device that displays an image, the image display device including: a1 st interface capable of transmitting an image signal as an image source and receiving electric power; a plurality of 2 nd interfaces capable of receiving electric power; a detection unit that detects connection of an external device to the 1 st interface and the plurality of 2 nd interfaces; an internal battery; and a control unit that switches interfaces, wherein when it is detected that at least one of the 1 st interface and the 2 nd interfaces is connected to an external device and that a device connected to the 1 st interface and the 2 nd interface is operable as a supply terminal, the control unit charges the internal battery with electric power supplied from the external device connected to the 1 st interface.
Another aspect for solving the above-described problems is a power feeding system including an image display device for displaying an image and a battery device for supplying power to the image display device, the image display device including: a 1 st interface capable of transmitting an image signal as an image source and receiving electric power; a plurality of 2 nd interfaces capable of receiving electric power; a detection unit that detects connection of an external device to the 1 st interface and the plurality of 2 nd interfaces; an internal battery; and a control unit that performs switching of interfaces, wherein when it is detected that at least one of the 1 st interface and the 2 nd interfaces is connected to an external device and that a device connected to the 1 st interface and the 2 nd interface is operable as a supply terminal, the control unit charges the internal battery with power supplied from the external device connected to the 1 st interface, wherein the 2 nd interfaces are configured by a 1 st power receiving interface that receives power supplied from the battery device and a2 nd power receiving interface that is arranged at a position where: when the 1 st power receiving interface is connected to the battery device, a port for connecting the 2 nd power receiving interface to an external device is shielded by the battery device.
A further aspect for solving the above-described problems is a power feeding method of an image display device that displays an image, wherein the power feeding method includes the steps of: detecting connection of an external device to a1 st interface capable of transmitting an image signal as an image source and receiving power, and a plurality of 2 nd interfaces capable of receiving power; and charging an internal battery of the image display device with electric power supplied from an external device connected to the 1 st interface when connection of at least one of the 1 st interface and the plurality of 2 nd interfaces to the external device is detected and an apparatus connected to the 1 st interface and the 2 nd interface is operable as a supply terminal.
Drawings
Fig. 1 is a diagram showing a schematic configuration of a display system.
Fig. 2 is a top view showing a main part of the structure of an optical system of the image display section.
Fig. 3 is a block diagram of a display system.
Fig. 4 is a block diagram of the control device.
Fig. 5 is a diagram showing an example of connection between the CO control unit and the power supply IC and the interfaces.
Fig. 6 is a diagram showing an example of connection between the control device and the external device.
Fig. 7 is a diagram showing an example of connection between the control device and the external device.
Fig. 8 is a diagram showing an example of connection between the control device and the external device.
Fig. 9 is a diagram showing an example of connection between the control device and the external device.
Fig. 10 is a diagram showing an example of connection between the control device and the external device.
Fig. 11 is a flowchart showing the operation of the control device.
Fig. 12 is a diagram showing an example of an image displayed on the touch panel.
Description of the reference numerals
1: A display system; 10: a connecting device; 11A: a connector; 11D: a connector; 20: an image display unit; 21: a right holding part; 22: a right display unit; 23: a left holding part; 24: a left display unit; 26: a right light guide plate; 27: a front frame; 28: a left light guide plate; 30: a headset; 32: a right earphone; 34: a left earphone; 36: an audio connector; 40: a connection cable; 46: a USB cable; 61: DP outside camera; 63: a microphone; 64: a distance sensor; 65: a DP illuminance sensor; 67: an LED indicator; 100: HMD;110: an interface part; 120: a DP control unit; 122: a sensor control unit; 126: a power supply control unit; 130: a nonvolatile memory unit; 140: an operation unit; 145: a connection part; 147: a sound processing unit; 201: an image signal; 210: a right display unit substrate; 211: a right interface part; 213: a receiving section; 215: an EEPROM;217: a temperature sensor; 221: an OLED unit; 223: an OLED panel; 225: an OLED driving circuit; 229: a power supply section; 230: a left display unit substrate; 231: a left interface part; 233: a receiving section; 235: DP6 axis sensor; 237: a DP magnetic sensor; 239: a temperature sensor; 241: an OLED unit; 243: an OLED panel; 245: an OLED driving circuit; 249: a power supply section; 251: a right optical system; 252: a left optical system; 261: a half mirror; 281: a half mirror; 300: a control device; 310: a CO control unit; 311: a processor; 312: a memory; 313: a nonvolatile memory; 321: a GNSS;322: a CO camera; 323: a CO 6 axis sensor; 324: a CO magnetic sensor; 325: a CO illuminance sensor; 326: a vibrator; 330: a CO display unit; 331: an LCD;335: a CO input unit; 336: a touch sensor; 337: a switch; 341: an internal battery; 342: a communication unit; 350: a touch panel; 361: an object; 363: guiding the image; 401: a power supply IC;402: a USB hub; 411: 1 st input/output terminal; 412: a 2 nd input/output terminal; 421: a1 st output terminal; 422: a 2 nd output terminal; 423: an input terminal; 431 to 433: a USB switch; 451 to 456: PSW; 461-469: a data line; 471-476): a power line; 481-487: a power line; 491: a power line; 510: 1 st interface; 513. 523, 533: a detection circuit; 520: 2 nd interface A;521: a 2 nd USB port; 530: a 2 nd interface B;531: a contact terminal; 710: a mobile battery; 730: selecting a battery; l: image light; LE: a left eye; and (3) OL: external light; RE: a right eye; u: and (3) a user.
Detailed Description
1. Structure of display system
An embodiment to which the present invention is applied will be described below with reference to the drawings.
Fig. 1 is a diagram showing a schematic configuration of a display system 1.
The display system 1 has an HMD100 and a control device 300. The HMD100 is a head-mounted display device that has an image display unit 20 that is worn on the head of a user U and allows the user to see images or videos. HMD is an acronym for Head Mounted Display. The display system 1 corresponds to the power feeding system of the present invention.
The HMD100 has a connection device 10 connected to an image display unit 20. The connection device 10 functions as an interface that connects the HMD100 with a device other than the HMD 100. In the display system 1, the control device 300 is connected to the connection device 10.
In the following description and the accompanying drawings, for convenience of description, the names of the several functional units constituting the HMD100 are given the joint word DP, and the names of the several functional units constituting the control device 300 are given the joint word CO.
The control device 300 has a touch panel 350 functioning as a display screen for displaying characters and images and an operation unit for detecting a touch operation and a press operation, and is a portable terminal device of a size, and for example, a smart phone can be used. The touch panel 350 is composed of an LCD331 and a touch sensor 336 described later with reference to fig. 4. LCD is an abbreviation for Liquid CRYSTAL DISPLAY. The control device 300 corresponds to an example of the image display device of the present invention. The image display device may be a desktop personal computer, a notebook personal computer, a tablet personal computer, or the like.
The connection device 10 has a connector 11A and a connector 11D in a box-shaped housing. The connector 11A is connected to the image display unit 20 via the connection cable 40, and the connector 11D is connected to the control device 300 via the USB cable 46. Thus, the image display unit 20 and the control device 300 are connected to each other so as to be able to transmit and receive data. For example, the control device 300 outputs video data and audio data for displaying a video on the image display unit 20 to the image display unit 20. For example, the image display unit 20 transmits detection data of various sensors included in the image display unit 20 to the control device 300 as described later. The control device 300 may be capable of supplying power to the image display unit 20. USB is an acronym for Universal Serial Bus.
The configuration of connecting the connection device 10 and the control device 300 using the USB cable 46 is merely an example, and the specific connection method of the connection device 10 and the control device 300 is not limited. For example, the connection may be made by wire using other types of cables, or may be made by wireless communication. For example, in a configuration in which the USB cable 46 is connected to the connector 11D of the USB-type c standard, a direct current of 20 volts can be supplied through the USB cable 46, and video data of the HDMI standard or the like can be transmitted as a function of the substitution pattern of the USB-type c. HDMI and MHL are registered trademarks.
The image display section 20 has a right display section 22, a left display section 24, a right light guide plate 26, and a left light guide plate 28 on a main body having a right holding section 21, a left holding section 23, and a front frame 27.
The right holding portion 21 and the left holding portion 23 extend rearward from both end portions of the front frame 27, and hold the image display portion 20 to the head of the user U. The right holding portion 21 is coupled to an end ER located on the right side of the user U in the front frame 27, and the left holding portion 23 is coupled to an end EL located on the left side of the user U.
The right light guide plate 26 and the left light guide plate 28 are provided to the front frame 27. The right light guide plate 26 is positioned in front of the right eye of the user U in a state where the image display unit 20 is worn, and allows the right eye to see an image. The left light guide plate 28 is positioned in front of the left eye of the user U in a state where the image display unit 20 is worn, and allows the left eye to see an image. The right light guide plate 26 and the left light guide plate 28 are optical parts formed of a light-transmitting resin or the like, and guide the image light output from the right display part 22 and the left display part 24 to eyes of the user U. The right light guide plate 26 and the left light guide plate 28 are, for example, prisms.
The front frame 27 has a shape in which one end of the right light guide plate 26 and one end of the left light guide plate 28 are connected to each other, and the connection position corresponds to the eyebrow space of the user U in the state where the user U wears the image display unit 20. The front frame 27 may have a nose pad portion that abuts against the nose of the user U in a state where the image display unit 20 is worn, or may be configured such that a belt is coupled to the right holding portion 21 and the left holding portion 23, and the image display unit 20 is held by the belt on the head of the user U.
The right display unit 22 and the left display unit 24 are modules for unitizing the optical unit and the peripheral circuit, respectively. The right display section 22 displays an image through the right light guide plate 26, and the left display section 24 displays an image through the left light guide plate 28. The right display unit 22 is provided in the right holding unit 21, and the left display unit 24 is provided in the left holding unit 23.
The image light guided by the right light guide plate 26 and the external light transmitted through the right light guide plate 26 are incident on the right eye of the user U. Also, the image light guided by the left light guide plate 28 and the external light transmitted through the left light guide plate 28 are incident on the left eye. The image light from the right light guide plate 26 and the left light guide plate 28 and the external light transmitted through the right light guide plate 26 and the left light guide plate 28 are incident on eyes of the user U. Thus, the user U views the image displayed on the image display unit 20 and the external view passing through the right light guide plate 26 and the left light guide plate 28 in an overlapping manner.
A DP illuminance sensor 65 is disposed on the front frame 27. The DP illuminance sensor 65 is a sensor that receives external light from the front of the user U wearing the image display unit 20. The DP illuminance sensor 65 can detect illuminance and light quantity of external light transmitted through the right light guide plate 26 and the left light guide plate 28 and incident on the eyes of the user U.
The DP outside camera 61 is provided in the front frame 27 at a position where the outside light passing through the right light guide plate 26 and the left light guide plate 28 is not blocked. The DP outside camera 61 is a digital camera having an imaging element such as a CCD or CMOS and a camera lens, and may be a monocular camera or a stereo camera. The view angle of the DP outside camera 61 includes at least a part of the range of the external view seen by the user U wearing the image display unit 20 through the right light guide plate 26 and the left light guide plate 28. The DP outside camera 61 may be a wide-angle camera or a camera capable of capturing the entire external view seen by the user U wearing the image display unit 20. CCD is a abbreviation for Charge Coupled Device, and CMOS is a abbreviation for Complementary Metal Oxide Semiconductor.
An LED indicator 67 is arranged on the front frame 27, and the LED indicator 67 is turned on during operation of the DP outside camera 61.
The front frame 27 is provided with a distance sensor 64, and the distance sensor 64 detects a distance to the object to be measured located in a predetermined measurement direction. The distance sensor 64 is, for example, a light reflection type distance sensor using an LED, a laser diode, or the like, an infrared type depth sensor, an ultrasonic type distance sensor, or a laser distance scanner. The distance sensor 64 may be a distance detection unit that combines image detection and sound detection, or a device that processes an image obtained by stereo capturing with a camera and detects a distance. The measurement direction of the distance sensor 64 is, for example, the direction in which the user U sees the external view through the right light guide plate 26 and the left light guide plate 28.
The right display portion 22 and the left display portion 24 are connected to the connecting device 10 by connecting cables 40, respectively. The connection cable 40 has an audio connector 36. The audio connector 36 is connected to the headset 30, and the headset 30 has right and left headphones 32, 34 and a microphone 63 that constitute a stereo headset. The right earphone 32 and the left earphone 34 output sound according to the sound signal output from the connection device 10. The microphone 63 collects sound and outputs a sound signal to the connection device 10.
2. Structure of optical system of image display unit
Fig. 2 is a top view of a main part showing the structure of the optical system of the image display section 20. In fig. 2, for illustration purposes, the left eye LE and the right eye RE of the user U are illustrated.
The right display unit 22 and the left display unit 24 are configured, for example, symmetrically.
As a structure for making the right eye RE see an image, the right display section 22 has an OLED unit 221 that emits image light and a right optical system 251 that guides the image light L emitted from the OLED unit 221 to the right light guide plate 26. The OLED is an abbreviation for Organic LIGHT EMITTING Diode.
The OLED cell 221 has an OLED panel 223 and an OLED driving circuit 225 driving the OLED panel 223. The OLED panel 223 is, for example, a self-luminous display panel in which light emitting elements each emitting R, G, B of color light are arranged. The OLED driving circuit 225 drives the OLED panel 223 under the control of the DP control unit 120. The OLED driving circuit 225 is mounted on a substrate, not shown, which is fixed to the back surface of the OLED panel 223, and the temperature sensor 217 shown in fig. 3 is mounted on the substrate.
The right optical system 251 makes the image light L emitted from the OLED panel 223 into a parallel light flux by a collimator lens, and makes the parallel light flux incident on the right light guide plate 26. Inside the right light guide plate 26, the image light L is reflected on a plurality of reflection surfaces, reflected on a half mirror 261 positioned in front of the eyes of the right eye RE, and emitted from the right light guide plate 26 toward the right eye RE.
As a structure for making the left eye LE see an image, the left display section 24 has an OLED unit 241 that emits image light and a left optical system 252 that guides the image light L emitted from the OLED unit 241 to the left light guide plate 28.
The OLED unit 241 has an OLED panel 243 and an OLED driving circuit 245 driving the OLED panel 243. The OLED panel 243 is, for example, a self-luminous display panel in which light emitting elements each emitting R, G, B of color light are arranged. The OLED driving circuit 245 drives the OLED panel 243 under the control of the DP control unit 120. The OLED driving circuit 245 is mounted on, for example, a substrate, not shown, which is fixed to the back surface of the OLED panel 243, and the temperature sensor 239 shown in fig. 3 is mounted on the substrate.
The left optical system 252 makes the image light L emitted from the OLED panel 243 into a parallel light flux by a collimator lens, and makes the parallel light flux incident on the left light guide plate 28. Inside the left light guide plate 28, the image light L is reflected on a plurality of reflection surfaces, reflected on a half mirror 261 positioned in front of the eye of the left eye LE, and emitted from the left light guide plate 28 toward the left eye LE.
HMD100 functions as a transmissive display device. That is, the image light L reflected on the half mirror 261 and the external light OL transmitted through the right light guide plate 26 are incident on the right eye RE of the user U. The image light L reflected on the half mirror 281 and the external light OL transmitted through the half mirror 281 are incident on the left eye LE. The HMD100 superimposes the image light L and the external light OL of the internally processed image on the eyes of the user U. Therefore, the user U sees the external view through the right light guide plate 26 and the left light guide plate 28, and sees the image based on the image light L superimposed on the external view. The half mirrors 261 and 281 are image extraction units that reflect the image light output from the right display unit 22 and the left display unit 24, respectively, and extract images, and constitute a display unit.
Control system of HMD
Fig. 3 is a block diagram of the display system 1, and in particular, shows the structure of the HMD100 in detail.
In the image display unit 20, the right display unit 22 has a right display unit substrate 210. A right interface 211 connected to the connection cable 40, a receiving unit 213 that receives data input from the connection device 10 via the right interface 211, and an EEPROM215 are mounted on the right display unit substrate 210. The right interface 211 connects the receiver 213, EEPROM215, temperature sensor 217, DP outside camera 61, distance sensor 64, DP illuminance sensor 65, and LED indicator 67 to the connection device 10. The receiving part 213 connects the OLED unit 221 with the connection device 10.
The left display 24 has a left display substrate 230. A left interface 231 connected to the connection cable 40 and a receiving unit 233 for receiving data input from the connection device 10 via the left interface 231 are mounted on the left display unit substrate 230. A DP6 axis sensor 235 and a DP magnetic sensor 237 are mounted on the left display unit substrate 230.
The left interface 231 connects the receiving portion 233, the DP6 axis sensor 235, the DP magnetic sensor 237, and the temperature sensor 239 with the connection device 10. The receiving part 233 connects the OLED unit 241 with the connection device 10.
In the description of the present embodiment and the drawings, the EEPROM is simply referred to as ELECTRICALLY ERASABLE PROGRAMMABLE READ-Only Memory. The reception units 213 and 233 are sometimes referred to as Rx213 and Rx233, respectively.
EEPROM215 stores various data non-volatile. The EEPROM215 stores, for example, data on the light emission characteristics and display characteristics of the OLED cells 221 and 241 included in the image display unit 20, data on the characteristics of the sensor included in the right display unit 22 or the left display unit 24, and the like. Specifically, parameters of the gamma correction of the OLED cells 221 and 241, data for compensating the detection values of the temperature sensors 217 and 239, and the like are stored so as to be readable by the DP control unit 120.
The DP outside camera 61 performs imaging in accordance with the signal input via the right interface unit 211, and outputs captured image data to the right interface unit 211. The DP illuminance sensor 65 receives external light and outputs a detection value corresponding to the received light amount or the received light intensity. The LED indicator 67 is turned on in accordance with a control signal or a driving current inputted through the right interface unit 211.
The temperature sensor 217 detects the temperature of the OLED unit 221, and outputs a voltage value or a resistance value corresponding to the detected temperature as a detection value.
The distance sensor 64 outputs a signal indicating the detection result of the detected distance to the connection device 10 via the right interface section 211.
The receiving unit 213 receives the display image data transmitted from the connection device 10 via the right interface unit 211, and outputs the display image data to the OLED cell 221. The OLED unit 221 displays an image based on the image data transmitted from the connection device 10.
The receiving unit 233 receives the display image data transmitted from the connection device 10 via the left interface unit 231, and outputs the display image data to the OLED cell 241. The OLED cells 221 and 241 display images based on the image data transmitted from the connection device 10.
DP6 axis sensor 235 is a motion sensor having a 3 axis acceleration sensor and a 3 axis gyro sensor. The DP magnetic sensor 237 is, for example, a 3-axis geomagnetic sensor. The DP6 axis sensor 235 and the DP magnetic sensor 237 may be IMUs formed by modularizing the above-described sensors, and may be a module in which the DP6 axis sensor 235 and the DP magnetic sensor 237 are integrated. IMU is a short for Inertial Measurement Unit. The temperature sensor 239 detects the temperature of the OLED cell 241. The DP6 axis sensor 235, the DP magnetic sensor 237, and the temperature sensor 239 output detection values to the connection device 10, respectively.
Each of the image display units 20 operates by electric power supplied from the connection device 10 via the connection cable 40. The image display unit 20 includes a power supply unit 229 in the right display unit 22 and a power supply unit 249 in the left display unit 24. The power supply unit 229 distributes the electric power supplied from the connection device 10 via the connection cable 40 to each of the right display unit 22 including the right display unit substrate 210 and supplies the electric power. The power supply unit 249 distributes the electric power supplied from the connection device 10 via the connection cable 40 to the respective units of the left display unit 24 including the left display unit substrate 230 and supplies the electric power. The power supply units 229 and 249 may have a conversion circuit or the like for converting a voltage.
The connection device 10 includes an interface 110, a DP control unit 120, a sensor control unit 122, a display control unit 124, a power supply control unit 126, a nonvolatile memory unit 130, an operation unit 140, a connection unit 145, and a sound processing unit 147.
The interface section 110 has a connector 11D and an interface circuit that executes a communication protocol based on various communication standards through the connector 11D. The interface 110 is, for example, an interface board on which the connector 11D and an interface circuit are mounted. The interface 110 may be provided with a memory card interface or the like capable of connecting an external storage device and a storage medium, or the interface 110 may be configured by a wireless communication interface.
The DP control unit 120 has a processor such as a CPU or microcomputer, and executes a program to control each unit of the connection device 10. The DP control part 120 may have a RAM constituting a work area of the processor. RAM is a short for Random Access Memory.
DP control unit 120 is connected to nonvolatile storage unit 130, operation unit 140, connection unit 145, and sound processing unit 147. The nonvolatile memory unit 130 is a ROM that nonvolatile stores programs and data executed by the DP control unit 120. ROM is an abbreviation for Read Only Memory.
The sensor control unit 122 operates each sensor included in the image display unit 20. Here, the sensors are the respective sensors of the DP outside camera 61, the distance sensor 64, the DP illuminance sensor 65, the temperature sensor 217, the DP6 axis sensor 235, the DP magnetic sensor 237, and the temperature sensor 239. Each sensor includes at least one of the DP outside camera 61, DP illuminance sensor 65, DP6 axis sensor 235, and DP magnetic sensor 237. The sensor control unit 122 sets and initializes the sampling period of each sensor according to the control of the DP control unit 120, and performs energization of each sensor, transmission of control data, acquisition of detection values, and the like in accordance with the sampling period of each sensor.
The sensor control unit 122 outputs detection data indicating the detection values and detection results of the respective sensors to the interface unit 110 at predetermined timings. Here, the image data captured by the DP outside camera 61 is referred to as detection data, as is the detection value or detection result of other sensors.
The sensor control section 122 may have an a/D converter that converts an analog signal into digital data. In this case, the sensor control unit 122 converts the detection value obtained from the sensor of the image display unit 20 and the analog signal of the detection result into detection data and outputs the detection data. The sensor control unit 122 may acquire digital data of the detection value and the detection result from the sensor of the image display unit 20, convert the data format, adjust the output timing, and the like, and output the detection data to the interface unit 110.
By the operation of the sensor control unit 122, the control device 300 connected to the interface unit 110 can acquire the detection values of the sensors of the HMD100 and the image data of the DP outside camera 61.
The sensor control unit 122 may output, as the detection data, a result of the arithmetic processing based on the detection values of the respective sensors. For example, the sensor control unit 122 may collectively process the detection values and the detection results of a plurality of sensors, and may function as a so-called sensor fusion processing unit. In this case, the sensor control unit 122 may generate detection data of a virtual sensor not included in each sensor of the image display unit 20 by sensor fusion. For example, the sensor control unit 122 may output, as the detection data, trajectory data indicating a trajectory of the movement of the image display unit 20, coordinate data indicating a position of the image display unit 20 in the three-dimensional space, and direction data indicating a direction of the image display unit 20. Here, the coordinate data may be data indicating relative coordinates with respect to the position of the connection device 10, or may be data indicating the position of the reference position set in the space where the image display unit 20 is located. The direction data may be data indicating a direction with respect to the position and direction of the connection device 10, or may be data indicating a direction with respect to a reference position set in a space where the image display unit 20 is located.
The sensor control unit 122 executes a communication protocol with a device connected to the connector 11D via the USB cable 46, and outputs detection data.
The display control unit 124 executes various processes for causing the image display unit 20 to display an image based on the video data or the display data input to the interface unit 110. In the present embodiment, the video data is transmitted in the substitution mode of USB type c through the connector 11D constituted by the USB type c connector. The display control unit 124 performs various processes such as frame cutting, resolution conversion, scaling, intermediate frame generation, and frame rate conversion. The display control unit 124 outputs the image data corresponding to the OLED cells 221 and 241 to the connection unit 145. The video data input to the connection section 145 is transmitted as the image signal 201 from the connector 11A to the right interface section 211 and the left interface section 231. The display control unit 124 adjusts and changes the display state of the image display unit 20 according to the display control data input to the interface unit 110.
The processor executes the program, and thereby at least one of the sensor control section 122 and the display control section 124 can be realized by cooperation of software and hardware. That is, the sensor control unit 122 and the display control unit 124 are configured by a processor, and execute the above-described operations by executing a program. In this example, the processor constituting the DP control unit 120 executes a program, whereby the sensor control unit 122 and the display control unit 124 can be realized. In other words, the processor executes the program, and thereby can function as the DP control unit 120, the display control unit 124, and the sensor control unit 122. Here, the processor may be said to be a computer. The sensor control unit 122 and the display control unit 124 may have a work memory for performing data processing, or may perform processing using the memory of the DP control unit 120.
The display control unit 124 and the sensor control unit 122 may be configured by programmed hardware such as DSP or FPGA. The sensor control unit 122 and the display control unit 124 may be integrated to form an SoC-FPGA. DSP is DIGITAL SIGNAL Processor short, FPGA is Field Programmable GATE ARRAY short, and SoC is System-on-a-Chip short.
The power supply control unit 126 is a circuit including: connected to the connector 11D, power is supplied to each part of the connection device 10 and the image display unit 20 based on the power supplied from the connector 11D.
The operation unit 140 detects an operation of a switch or the like included in the connection device 10, and outputs data indicating the operation content to the DP control unit 120.
The sound processing unit 147 generates a sound signal from the sound data input from the DP control unit 120, and outputs the sound signal to the connection unit 145. The sound signal is output from the connection 145 to the right earphone 32 and the left earphone 34 via the audio connector 36. The sound processing unit 147 generates sound data of the sound collected by the microphone 63 and outputs the sound data to the DP control unit 120. The sound data output from the sound processing unit 147 may be processed by the sensor control unit 122, similarly to the detection data of the sensor included in the image display unit 20.
4. Structure of control device
Fig. 4 is a block diagram of the control apparatus 300.
The control device 300 has a CO control unit 310. The CO control section 310 has a processor 311, a memory 312, and a nonvolatile memory 313. The processor 311 is configured by a CPU, microcomputer, DSP, and the like, and executes a program to control each section of the control device 300. The memory 312 forms a work area of the processor 311. The nonvolatile memory 313 is constituted by a semiconductor memory device or the like, and nonvolatile stores programs executed by the processor 311 and various data processed by the processor 311. For example, the nonvolatile memory 313 stores an operating system that is a basic control program executed by the processor 311, an application program that operates on the operating system, and the like. The nonvolatile memory 313 stores data to be processed when an application program is executed and data of a processing result. The CO control unit 310 may be an SoC in which the processor 311, the memory 312, and the nonvolatile memory 313 are integrated.
The CO control unit 310 is connected to the GNSS321, the CO camera 322, the CO6 axis sensor 323, the CO magnetic sensor 324, the CO illuminance sensor 325, the CO display unit 330, and the CO input unit 335.
The GNSS321 performs positioning by using a satellite positioning system, and outputs the position of the control device 300 to the CO control unit 310.GNSS is an acronym for Global Navigation SATELLITE SYSTEM.
The CO camera 322 is a digital camera provided in the main body of the control device 300, and is disposed adjacent to the touch panel 350, for example, and captures an image of a direction facing the touch panel 350. The CO camera 322 performs imaging in accordance with the control of the CO control unit 310, and outputs captured image data to the CO control unit 310.
The CO6 axis sensor 323 is a motion sensor having a3 axis acceleration sensor and a3 axis gyro sensor, and outputs detection data indicating a detection value to the CO control unit 310. The CO magnetic sensor 324 is, for example, a 3-axis geomagnetic sensor, and outputs detection data indicating a detection value to the CO control unit 310. The CO6 axis sensor 323 and the CO magnetic sensor 324 may be IMUs formed by modularizing the above-described sensors, or may be a module in which the CO6 axis sensor 323 and the CO magnetic sensor 324 are integrated.
The CO illuminance sensor 325 receives external light, and outputs detection data indicating a detection value corresponding to the received light amount or the received light intensity to the CO control unit 310.
The CO display unit 330 has an LCD331, and causes the LCD331 to display characters and images under the control of the CO control unit 310.
The CO input unit 335 detects an operation on the touch sensor 336 and the switch 337, and outputs operation data indicating the detected operation to the CO control unit 310. The touch sensor 336 is disposed on the surface of the LCD331 in an overlapping manner, and forms a touch panel 350 together with the LCD 331. The touch sensor 336 detects a contact operation and a pressing operation performed by the user U. The switch 337 is, for example, a hardware switch such as a power switch or a volume adjustment switch of the control apparatus 300.
The CO control unit 310 is connected to the internal battery 341, the communication unit 342, the 1 st interface 510, the 2 nd interface a520, and the 2 nd interface B530.
The internal battery 341 is a secondary battery built in the main body of the control device 300, and supplies electric power to each part of the control device 300. The internal battery 341 may have a control circuit, not shown, that controls the output of electric power and the charging of the secondary battery.
The communication unit 342 supports a wireless communication protocol such as Bluetooth or Wi-Fi, and performs wireless communication with an external device of the display system 1. Bluetooth and Wi-Fi are registered trademarks. The communication unit 342 may be configured to perform mobile data communication using a mobile communication network such as LTE or 5 th generation mobile communication system. LTE is a registered trademark.
The control device 300 has a plurality of interfaces. The control device 300 of the present embodiment has 3 interfaces, i.e., a1 st interface 510, a2 nd interface a520, and a2 nd interface B530.
The 1 st interface 510 is an interface based on the USB Type-C standard. The 1 st interface 510 is an interface corresponding to transmission and reception of a data signal, supply of electric power to a connected external device, and reception of electric power supplied from the outside. The external device capable of connecting with the 1 st interface 510 includes, for example, the HMD100 and the mobile battery 710. The 1 st interface 510 can also be connected to an input device such as a digital camera, a QR code reader, an SD card, a mouse, and a keyboard. The QR code is a registered trademark.
In addition, interface 1510 supports an alternating pattern. The alternate mode is a mode in which the data signal lines exchanged between usb3.1gen1 can be operated as signal lines of other standards. Suppose that HMD100 is connected to USB port 1 511 of interface 1 510. When an image signal is output to the HMD100, the CO control unit 310 operates a signal line used for transmitting and receiving a data signal as a signal line of DisplayPort, and operates a terminal provided at the 1 st USB port 511 of the 1 st interface 510 in a DisplayPort alternating mode. Thereby, an image signal is output to the HMD100, which is an external device connected to the 1 st interface 510.
The 1 st interface 510 has a 1 st USB port 511 and a detection circuit 513. The 1 st USB port 511 is provided with a terminal for signal transmission, a terminal for signal reception, a terminal for supporting USB2.0 such as d+ or D-, a VBUS terminal, a GND terminal, a CC terminal, and the like.
The detection circuit 513 detects a change in voltage of the CC terminal provided in the 1 st USB port 511, corresponding to an example of the detection unit. The detection circuit 513 detects connection of the external device to the 1 st USB port 511 based on the detected change in the voltage of the CC terminal. The detection circuit 513 determines whether the setting of the external device connected to the 1 st USB port 511 is the supply end or the reception end, based on the detected voltage of the CC terminal. The supply side means a supply source of a power source, and the receiving side means a consumption side that consumes power. CC is a abbreviation for Configuration Channel, the CC terminal has multiple terminals for CC1 and CC 2. The detection circuit 513 outputs a signal indicating the detection result to the CO control unit 310.
Interface 2a 520 is also an interface based on the USB Type-C standard. The 2 nd interface a520 is an interface corresponding to transmission and reception of a data signal, supply of external power, and reception of external power. In addition, interface 2a 520 does not support the alternate mode. The 2 nd interface a520 can connect the mobile battery 710 as an external device. The 2 nd interface a520 can also be connected to an input device such as a digital camera, a QR code reader, an SD card, a mouse, and a keyboard. Further, the 2 nd interface a520 corresponds to the 2 nd power receiving interface of the present invention.
The 2 nd interface a520 has a2 nd USB port 521 and a detection circuit 523. The detection circuit 523 detects a change in voltage of the CC terminal provided at the 2 nd USB port 521. The detection circuit 523 detects connection of the external device to the 2 nd USB port 521 based on the detected change in the voltage of the CC terminal. The detection circuit 523 outputs a signal indicating the detection result to the CO control unit 310. The detection circuit 523 corresponds to an example of the detection section of the present invention. The 2 nd USB port 521 corresponds to a port for connection according to the present invention.
The 2 nd interface B530 is an interface capable of connecting the battery 730 as an external device. The 2 nd interface B530 has a contact terminal 531 and a detection circuit 533. The 2 nd interface B530 corresponds to the 1 st power receiving interface of the present invention.
The 2 nd interface B530 is an interface dedicated for charging. The contact terminals 531 use pogo pins, for example. The spring pin has elasticity and expands and contracts when contacting a contact terminal provided on an external device. The contact terminals 531 are connected to signal lines of VBus, D+, D-and Grand of USB2.0, respectively. The contact terminal 531 has a terminal used for connection detection of an external device, and the detection circuit 533 detects connection of the external device to the 2 nd interface B530 based on a voltage change of the terminal. The detection circuit 533 outputs a signal indicating the detection result to the CO control section 310.
The external device connected to the 2 nd interface B530 is a dedicated battery, i.e., the optional battery 730, prepared as an optional component. The optional battery 730 has a metal pad 750 that contacts the contact terminal 531 when connected to the control device 300, and the contact terminal 531 contacts the metal pad 750, thereby receiving power supplied from the optional battery 730. The metal pad 750 corresponds to a power supply terminal of the present invention.
Fig. 5 is a diagram showing an example of connection between the CO control unit 310 and the power supply IC401 of the control device 300 and the respective interfaces.
The CO control unit 310 is connected to the 1 st interface 510, the 2 nd interface a520, and the 2 nd interface B530 via data lines for data communication.
The CO control unit 310 and the 1 st interface 510 are connected by a data line 461. The CO control unit 310 has a1 st input/output terminal 411. The 1 st input/output terminal 411 is connected to a differential signal line for transmitting and receiving serial data corresponding to the USB Super Speed mode. The 1 st input/output terminal 411 supports the display port alternating mode, and is used as a terminal for outputting an image signal.
The CO control unit 310 and the 1 st interface 510 are connected via a USB switch 431 and a USB switch 432. The CO control unit 310 has a2 nd input/output terminal 412. The 2 nd input/output terminal 412 is connected to a signal line based on the USB2.0 standard. The 2 nd input/output terminal 412 and the USB switch 431 are connected by a data line 462. The USB switch 431 and the USB switch 432 are connected by a data line 463. The USB switch 432 and the 1 st USB port 515 are connected by a data line 464.
The CO control unit 310 and the 2 nd interface a520 are connected via the USB switch 431 and the USB hub 402.
The 2 nd input/output terminal 412 and the USB switch 431 are connected by a data line 462. The USB switch 431 and the USB hub 402 are connected by a data line 466. The USB hub 402 and the 2 nd interface a520 are connected by a data line 467.
The CO control unit 310 and the 2 nd interface B530 are connected via the USB switch 431, the USB hub 402, and the USB switch 433.
The 2 nd input/output terminal 412 and the USB switch 431 are connected by a data line 462. The USB switch 431 and the USB hub 402 are connected by a data line 466. The USB hub 402 and the USB switch 433 are connected by a data line 468. Further, the USB switch 433 and the 2 nd interface B530 are connected through a data line 469.
Next, the connection between the power IC401 and the 1 st interface 510, the 2 nd interface a520, and the 2 nd interface B530 will be described.
The power supply IC401 is connected to the internal battery 341, and controls charging of the internal battery 341 and supply of electric power charged to the internal battery 341. The power supply IC401 is connected to the CO control unit 310 via a power supply line 491, and supplies system power for operating the CO control unit 310 to the CO control unit 310.
The power supply IC401 has a 1 st output terminal 421 and a 2 nd output terminal 422 as terminals for outputting power to the outside, and an input terminal 423 as a terminal for receiving power supplied from the outside.
The 1 st output terminal 421 supports the PD standard of USB and is connected to the 1 st interface 510 via a power line 471. PD is a tag omitting Power Delivery. In the following description, a power supply line corresponds to a power supply path of the present invention.
The 2 nd output terminal 422 is connected to the 1st interface 510 and the 2 nd interface a 520.
The 2 nd output terminal 422 and the 1 st interface 510 are connected via the boost IC405 and the PSW 451. The boost IC405 is a circuit that boosts the voltage supplied from the power supply IC 401. PSW is shorthand for power switches.
The 2 nd output terminal 422 and the boost IC405 are connected by a power supply line 472. The booster IC405 and the PSW451 are connected via a power line 473 and a power line 475 connected to the power line 473. The PSW451 and the 1 st interface 510 are connected by a power line 476.
The 2 nd output terminal 422 and the 2 nd interface a520 are connected via the boost IC405 and the PSW 452.
The 2 nd output terminal 422 and the boost IC405 are connected by a power supply line 472. Boost IC405 and PSW452 are connected by power line 473. The PSW452 and the 2 nd interface a520 are connected by a power line 474.
The input terminal 423 is connected to the 1 st interface 510, the 2 nd interface a520, and the 2 nd interface B530.
The 1 st interface 510 and the input terminal 423 are connected via the PSW 453. The 1 st interface 510 and the PSW453 are connected by a power supply line 481. The PSW453 and the input terminal 423 are connected by a power supply line 482. PSW453 corresponds to a switch of the present invention.
The 2 nd interface a520 and the input terminal 423 are connected via the PSW454 and the PSW 455. The 2 nd interface a520 and the PSW454 are connected through a power line 483. PSW454 and PSW455 are connected by power line 484. PSW455 and input terminal 423 are connected by power line 485 and power line 482. PSW454 and PSW455 correspond to switches of the present invention.
The 2 nd interface B530 and the input terminal 423 are connected via the PSW456 and the PSW 455. The 2 nd interface B530 and the PSW456 are connected by a power line 486. PSW456 and PSW455 are connected by power line 487 and 484. PSW455 and input terminal 423 are connected by power line 485 and power line 482. PSW456 and PSW455 correspond to switches of the present invention.
The CO control section 310 is inputted with the detection results of the detection circuits 513, 523, and 533. The CO control unit 310 controls the USB switches 431 to 433 and the PSWs 451 to 456 based on the input detection result, and switches the output destination of the data signal, the supply destination of the supplied power, the reception destination of the received power, and the like.
Fig. 6 is a diagram showing an example of connection between the control device 300 and an external device.
Fig. 6 shows a case where the 1 st USB port 511 is connected to the HMD100, and the 2 nd USB port 521 is connected to the mobile battery 710.
By operating the 1 st interface 510 in the alternating mode, an image signal is output from the control device 300 to the HMD100, and the image display unit 20 of the HMD100 can display a video based on the image signal. The CO control unit 310 outputs the image signal to the 1 st interface 510 via the 1 st input/output terminal 411.
Further, by connecting the 2 nd USB port 521 to the mobile battery 710, the internal battery 341 can be charged with electric power supplied from the mobile battery 710. When the HMD100 connected to the 1 st USB port 511 is set as the receiving end, the CO control unit 310 switches the PSW to receive the power supplied from the mobile battery 710 connected to the 2 nd USB port 521. The CO control unit 310 sets the PSWs 454 and 455 on, and sets the PSWs 453 and 456 off.
Priorities are set for interface 1 510, interface 2a 520, and interface 2B 530. The priority is a priority of charging the electric power supplied to the control device 300. The priority of the 1 st interface 510 is set to be higher than the priorities of the 2 nd interface a520 and the 2 nd interface B530.
For example, as shown in fig. 7, assuming that the connection device 10 is connected to the HMD100 and the mobile battery 710, the connection device 10 is connected to the 1 st USB port 511 of the 1 st interface 510. Further, it is assumed that the 2 nd USB port 531 of the 2 nd interface a520 is also connected to the mobile battery 710. When the mobile batteries 710 are each operable as a supply terminal, the CO control unit 310 selects the mobile battery 710 connected to the connection device 10, and charges the internal battery 341 with electric power supplied from the selected mobile battery 710. In this case, the CO control unit 310 sets the PSW453 on and the PSWs 454 to 456 off.
Fig. 8 is a diagram showing an example of connection between the control device 300 and an external device.
Fig. 8 shows a case where the 1 st USB port 511 is connected to the HMD100, and the contact terminal 531 of the 2 nd interface B530 is connected to the optional battery 730, which is a battery prepared as an optional component. In this case, as in the connection example shown in fig. 6, an image signal is output from the control device 300 to the HMD100, and the image display unit 20 of the HMD100 displays an image based on the image signal. The optional battery 730 is included in the control device 300 when connected to the control device 300. Specifically, when the battery 730 is connected to the control device 300, the battery 730 contacts the control device 300 on each of the upper, lower, left, right side surfaces and the back surface of the control device 300. Further, a plurality of metal pads 750 are arranged at contact positions with the contact terminals 531 provided on the back surface of the control device 300. The contact terminal 531 is constituted by a spring pin, and when the contact terminal 531 contacts the metal pad 750, the contact terminal 531 expands and contracts. By expanding and contracting the contact terminal 531, the reliability of contact between the contact terminal 531 and the metal pad 750 can be improved.
In the connection example shown in fig. 8, the CO control unit 310 also switches the PSW when the HMD100 connected to the 1 st USB port 511 is set as the receiving end, and receives the electric power supplied from the optional battery 730 connected to the contact terminal 531 of the 2 nd interface B530. The CO control unit 310 sets the PSW456 to on and the PSWs 453 to 455 to off.
Further, as shown in fig. 9, assuming that the connection device 10 is connected to the HMD100 and the mobile battery 710, the connection device 10 is connected to the 1 st USB port 511 of the 1 st interface 510. Further, it is assumed that the contact terminal 531 of the 2 nd interface B530 is connected to the optional battery 730. Of the 1 st interface 510 and the 2 nd interface B530, the 1 st interface 510 has a higher priority than the 2 nd interface B530. In this case, when both the mobile battery 710 and the optional battery 730 are operable as the supply terminals, the CO control unit 310 selects the mobile battery 710 connected to the connection device 10, and charges the internal battery 341 with the electric power supplied from the selected mobile battery 710. The CO control unit 310 sets the PSW453 on and the PSWs 454 to 456 off.
Fig. 10 is a diagram showing an example of connection between the control device 300 and an external device.
Fig. 10 shows a case where the 2 nd USB port 521 is connected to the mobile battery 710, and the contact terminal 531 is connected to the optional battery 730.
In the present embodiment, the priority of the 2 nd interface a520 is higher than the priority of the 2 nd interface B530. When the supply terminal is connected to the 2 nd interface a520 and the 2 nd interface B530, the CO control unit 310 switches the PSW to receive the power supplied from the mobile battery 710 connected to the 2 nd USB port 521. The CO control unit 310 sets the PSWs 454 and 455 on, and sets the PSWs 453 and 456 off.
In addition, in a state where the contact terminal 531 of the 2 nd interface B530 is connected to the optional battery 730, a restriction may be set so that the mobile battery 710 cannot be connected to the 2 nd USB port 521 of the 2 nd interface a 520. For example, when the control device 300 is connected to the optional battery 730, the 2 nd USB port 521 may be physically hidden by the optional battery 730, so that the 2 nd USB port 521 cannot be connected to an external device. Therefore, the battery can be prevented from being connected simultaneously to the 2 nd USB port 521 of the 2 nd interface a520 and the contact terminal 531 of the 2 nd interface B530. Further, by selecting the battery 730 to cover the 2 nd USB port 521, intrusion of dust or the like into the 2 nd USB port 521 can be suppressed. The optional battery 730 corresponds to a battery device of the present invention.
Fig. 11 is a flowchart showing the operation of the CO control unit 310.
The operation of the CO control unit 310 will be described with reference to the flowchart shown in fig. 11.
The CO control section 310 is inputted with the detection results of the detection circuits 513, 523, and 533.
The CO control unit 310 determines whether or not there is a port that detects connection of an external device based on the input detection result (step S1). If the determination at step S1 is no, the CO control unit 310 returns to the determination at step S1. If the determination at step S1 is yes, the CO control unit 310 determines whether or not there are a plurality of ports for detecting connection of the external device (step S2).
If the determination at step S2 is no, the CO control unit 310 executes an operation corresponding to the connected external device (step S3). For example, when a portable battery is connected as an external device, the CO control unit 310 causes the interface to receive electric power supplied from the portable battery, and charges the internal battery 341 with the received electric power. When the HMD100 is connected as an external device, the CO control unit 310 outputs an image signal to the HMD100 according to an operation by the operator. When the receiving device is connected as the external device, the CO control unit 310 supplies power for charging the internal battery 341 to the external device according to an operation by the operator.
If the determination at step S2 is yes, the CO control unit 310 determines whether or not the 1 st USB port 511 is included in the port detected to be connected (step S4). If the determination at step S4 is yes, the CO control unit 310 determines whether or not the external device connected to the 1 st USB port 511 is a supply terminal (step S5).
If the determination at step S5 is no, the CO control unit 310 selects the other ports than the 1 st USB port 511 as power receiving ports for receiving power (step S9). The port is a port detected by the determination of step S2. The CO control unit 310 switches on and off of the PSW so that power supplied from an external device connected to the selected power receiving port is input to the power supply IC401 (step S10). The CO control unit 310 also causes the power supply IC401 to charge the internal battery 341 (step S8).
When the determination at step S5 is yes, the CO control unit 310 selects the 1 st USB port 511 as the power receiving port (step S6). The CO control unit 310 turns on the PSW451 so that the power supplied from the external device connected to the selected 1 st USB port 511 is input to the power supply IC401 (step S7). Further, the CO control unit 310 causes the power supply IC401 to charge the internal battery 341 with the received electric power (step S8).
If the determination at step S4 is no, the CO control unit 310 selects the 2 nd USB port 521 as the power receiving port (step S11). The CO control section 310 switches the PSW453 and the PSW455 on so that the power supplied from the external device connected to the selected 2 nd USB port 521 is input to the power supply IC401 (step S12). Further, the CO control unit 310 causes the power supply IC401 to charge the internal battery 341 with the received electric power (step S8).
Further, the control apparatus 300 has a virtual device mode as a display mode. The virtual device mode is a mode in which the touch panel 350 functions as an input device such as a so-called game board. The virtual device mode corresponds to a preset operation mode of the present invention.
Fig. 12 shows a display example of the touch panel 350 in the virtual device mode.
In the virtual device mode, an input device screen is displayed on the touch panel 350. On the input device screen, an object 361 imitating a direction key and a guide image 363 indicating an area functioning as a touch pad are displayed as display objects. The object 361 is an image that is integrated with keys indicating the up, down, left, and right directions and mimics the shape of a so-called cross key. The user U performs the same operation as the cross key by performing a touch operation on the position of the object 361. The user U performs the same operation as the touch pad by performing a touch operation within the frame of the guide image 363.
When the control apparatus 300 operates in the virtual device mode, the CO control unit 310 obtains the remaining amount of the electric power charged in the internal battery 341 from the power supply IC 401. The CO control unit 310 causes the CO display unit 330 to display the obtained power margin.
When the mobile battery 710 is connected to the 2 nd USB port 521, the CO control unit 310 performs data communication with the mobile battery 710 to obtain a power margin for charging the mobile battery 710.
When the optional battery 730 is connected to the contact terminal 531, the CO control unit 310 performs data communication with the optional battery 730, and obtains a power margin for charging the optional battery 730.
The CO control unit 310 causes the CO display unit 330 to display the obtained power margin. The CO control unit 310 displays the power margin of the internal battery 341 and the power margin of the mobile battery 710 or the optional battery 730 in different display modes. For example, the CO control unit 310 may change the color and size of the display in the display of the remaining power of the internal battery 341 and the display of the remaining power of the mobile battery 710 or the optional battery 730. The CO control unit 310 may change the icon or symbol representing the power margin. Fig. 12 shows the following example: the power margin of the internal battery 341 is displayed in percentage by a numerical value, and the margin of the mobile battery 710 or the optional battery 730 is displayed in the form of a bar.
The CO control unit 310 obtains the sum of the power margin of the internal battery 341 and the power margin of the mobile battery 710 or the optional battery 730.
The CO control unit 310 causes the HMD100 to perform a reporting operation when the sum of the power remaining of the internal battery 341 and the power remaining of the mobile battery 710 or the optional battery 730 is equal to or less than a preset threshold. The reporting operation performed by the HMD100 may cause the image display unit 20 to display a message notifying that the remaining power of the battery is small, for example. The HMD100 may output sounds from the right and left headphones 32 and 34 that notify that the remaining power level of the battery has fallen below a threshold value. Further, a vibrator may be mounted on the HMD100, and the reporting operation may be performed by vibrating the vibrator. The reporting operation may be performed by lighting or blinking the LED indicator 67 provided on the front frame 27 of the HMD 100. In addition, a device other than the HMD100 may be caused to execute the reporting operation. For example, the CO control unit 310 may transmit a predetermined signal to headphones or wearable devices connected to the control device 300 via Bluetooth, and vibrate the headphones or wearable devices.
5. Modification examples
Fig. 5 shows the case where the 2 nd interface B530 is a charging dedicated interface, but the 2 nd interface B530 may be an interface capable of feeding and receiving power. For example, interface 2a 520 is connected to mobile battery 710 and interface 2B 530 is connected to optional battery 730. When the external device is connected to the 2 nd interface a520 and the 2 nd interface B530, the CO control unit 310 selects the 2 nd interface a520 having a high priority. The CO control section 310 sets the PSWs 454 and 455 on, and sets the PSWs 453 and 456 off so as to receive the electric power supplied from the mobile battery 710 connected to the 2 nd USB port 521.
The CO control unit 310 may charge the internal battery 341 with 100% of the electric power supplied from the mobile battery 710, and then supply the electric power supplied from the mobile battery 710 to the optional battery 730. The CO control unit 310 causes the power supply IC401 to supply the electric power supplied from the mobile battery 710 to the optional battery 730 connected to the 2 nd interface B530. Thus, the optional battery 730 connected to the 2 nd interface B530 can be charged by the mobile battery 710 connected to the 2 nd interface a 520.
As described above, the control device 300 according to the present embodiment is a device for displaying an image, and includes the 1 st interface 510 and a plurality of 2 nd interfaces.
The 1 st interface 510 is an interface capable of transmitting an image signal as an image source and receiving power. The plurality of 2 nd interfaces are a2 nd interface a520 and a2 nd interface B530 capable of receiving power.
Further, the control device 300 has detection circuits 513, 523, and 533, an internal battery 341, and a CO control section 310.
When detecting that the external device is connected to at least one of the 1 st interface 510, the 2 nd interface a520, and the 2 nd interface B530, the CO control unit 310 charges the internal battery 341 with power supplied from the external device connected to the 1 st interface 510.
Therefore, the following can be suppressed: an external device connected to the plurality of interfaces operates as a supply terminal, and a short circuit occurs due to electric power supplied from the plurality of external devices. Further, the internal battery 341 can be charged by the power supplied from the interface transmitting the image signal.
In the control device 300, the interfaces of the 1 st interface 510, the 2 nd interface a520, and the 2 nd interface B530 are connected to the internal battery 341 through a plurality of power lines 471 to 476, 481 to 487.
The control device 300 further includes PSWs 451 to 456, and the PSWs 451 to 456 are provided on the plurality of power lines 471 to 476 and 481 to 487 to switch the connection between the 1 st interface 510, the 2 nd interface a520, and the 2 nd interface B530 and the internal battery 341.
Therefore, by switching the PSWs 451 to 456, any one of the 1 st interface 510, the 2 nd interface a520, and the 2 nd interface B530 selected can be connected to the internal battery 341.
When detecting that the external device is connected to the 2 nd interface a520 and the 2 nd interface B530, the CO control unit 310 selects either the 2 nd interface a520 or the 2 nd interface B530 in the order of priority.
The CO control unit 310 connects the selected 2 nd interface a520 or 2 nd interface B530 to the internal battery 341 by switching the switch. The CO control unit 310 does not connect the unselected 2 nd interface B530 or 2 nd interface a520 to the internal battery 341.
Accordingly, the internal battery 341 can be charged by the electric power supplied from the selected 2 nd interface a520 or 2 nd interface B530.
The plurality of 2 nd interfaces include a 2 nd interface a520 which is an interface capable of data communication with an external device.
Therefore, data communication with the external device is possible, and information can be acquired from the external device.
The plurality of 2 nd interfaces includes a2 nd interface B530, and the 2 nd interface B530 has a spring pin as a contact terminal 531, and receives power supplied from an external device when a metal pad 750 provided on the external device is in contact with the contact terminal 531.
Therefore, by bringing the contact terminal 531 into contact with the metal pad 750, it is possible to receive electric power supplied from an external device.
Further, interface 1 510 is based on the USBType-C standard.
The control device 300 is configured to operate in the DisplayPort alternate mode with the connector provided to the 1 st USB port 511.
Accordingly, an image signal can be supplied from the control device 300 to the HMD100 via the 1 st interface 510.
The control device 300 has a CO display unit 330 as a display unit.
When an external battery is connected to at least one of the 1 st interface 510, the 2 nd interface a520, and the 2 nd interface B530, the CO control unit 310 obtains the power margin of the connected external battery. The CO control unit 310 causes the CO display unit 330 to display the obtained power margin.
Therefore, the CO display unit 330 can display the remaining power of the external battery.
The CO control unit 310 obtains the remaining power of the internal battery 341, and causes the CO display unit 330 to display the obtained remaining power of the external battery and the remaining power of the internal battery 341 in different display modes.
Therefore, the power margin of the external battery and the power margin of the internal battery 341 displayed in the CO display unit 330 are easily distinguished.
When the 1 st interface 510 is connected to the HMD100, the 2 nd interface a520 or the 2 nd interface B530 is connected to the external battery, and the operation mode of the control apparatus 300 is the virtual device mode, the CO control unit 310 causes the CO display unit 330 to display the power margin of the external battery and the power margin of the internal battery 341.
The CO control unit 310 causes the HMD100 to perform a reporting operation when the sum of the power remaining amount of the external battery and the power remaining amount of the internal battery 341 is equal to or less than a predetermined threshold value.
Therefore, the user U of the HMD100 can be informed of the decrease in the power margin of the external battery and the internal battery 341.
The present invention is not limited to the configuration described in the above embodiments, and can be implemented in various modes within a range not departing from the gist thereof.
For example, the display system 1 has an example of a structure having the HMD100 as a head-mounted display device, but the present invention is not limited thereto, and various display devices can be employed. For example, instead of the image display unit 20, an image display unit of another type such as an image display unit worn as a hat may be used, and the image display unit may include a display unit for displaying an image corresponding to the left eye of the user U and a display unit for displaying an image corresponding to the right eye of the user U. The display device of the present invention may be configured as a head mounted display mounted on a vehicle such as an automobile or an airplane. For example, the present invention may be configured as a head mount display incorporated in a body protecting device such as a helmet. In this case, the portion that positions the body of the user U and the portion that positions the body of the user U can be used as the wearing portion.
The HMD100 is an example of a display device to which the present invention is applied, and is not limited to the configuration shown in fig. 3. For example, in the above embodiment, the structure in which the image display unit 20 and the connection device 10 are separated has been described, but a structure in which the connection device 10 and the image display unit 20 are integrally configured and worn on the head of the user U may also be employed. The configuration of the optical system of the image display unit 20 is arbitrary, and for example, an optical member positioned in front of the eyes of the user U and overlapping a part or the whole of the field of view of the user U may be used. Alternatively, an optical system of a scanning system that scans laser light or the like to form image light may be used. Alternatively, the image light may be guided not only inside the optical member but also toward the eyes of the user U by refracting and/or reflecting the image light.
As the display device, a liquid crystal monitor or a liquid crystal television set that displays an image on a liquid crystal display panel may be used. A display device having a plasma display panel or an organic EL display panel may be used. In this case, the display panel corresponds to the display unit of the present invention. Further, as the display device, a projector that projects image light onto a screen or the like may be used.
In addition, for example, in the HMD100 shown in fig. 3, the connection device 10 may be configured by a USB-type c connector, a USB-type c controller, and a USB hub. In this case, the DP outside camera 61 or other sensor may be connected to the USB hub. Further, as a controller for controlling the display of the right display unit 22 and the left display unit 24 in the image display unit 20, an FPGA for outputting display data to the right display unit 22 and the left display unit 24 may be arranged in either the right display unit 22 or the left display unit 24. In this case, the connection device 10 may have a bridge (bridge) controller that connects the USB-type c controller and the FPGA. The image display unit 20 may be configured such that the DP6 axis sensor 235, the DP magnetic sensor 237, the EEPROM215, and the like are mounted on the same substrate as the FPGA. The arrangement of the other sensors can be changed as appropriate. For example, the distance sensor 64 and the DP illuminance sensor 65 may be configured to be disposed at positions suitable for measurement or detection, and connected to an FPGA or a USB-type c controller.
In addition, the specific specification of the display device including the OLED cells 221, 241 is not limited, and for example, the OLED cells 221, 241 may have a common structure.
At least a part of the functional blocks shown in fig. 3 and 4 may be realized by hardware or may be realized by cooperation of hardware and software, and the present invention is not limited to the configuration in which independent hardware resources are configured as shown in the drawings. The program executed by the processor 311 may be obtained and executed from an external device via the communication unit 342 or the interface unit 343.

Claims (11)

1. An image display device that displays an image, comprising:
a1 st interface capable of transmitting an image signal as an image source and receiving electric power;
a plurality of 2 nd interfaces capable of receiving electric power;
a detection unit that detects connection of an external device to the 1 st interface and the plurality of 2 nd interfaces;
An internal battery; and
A control unit for switching the interfaces,
The control unit charges the internal battery with power supplied from an external device connected to the 1 st interface when it is detected that at least one of the 1 st interface and the 2 nd interfaces is connected to an external device and that a device connected to the 1 st interface and the 2 nd interface is a supply terminal.
2. The image display device according to claim 1, wherein,
The image display device includes:
A plurality of power supply paths connecting the internal battery with the 1 st interface and each 2 nd interface of the plurality of 2 nd interfaces; and
And a plurality of switches provided in the plurality of power supply paths, respectively, for switching connection between the internal battery and each of the 1 st interface and the 2 nd interfaces.
3. The image display device according to claim 2, wherein,
When it is detected that at least 2 interfaces 2 are connected to an external device, the control unit selects any one of the interfaces 2 according to a preset priority, and connects the selected interface 2 to the internal battery by switching a switch, and the non-selected interface 2 is not connected to the internal battery.
4. The image display device according to any one of claims 1 to 3, wherein,
The plurality of 2 nd interfaces include interfaces capable of data communication with an external device.
5. The image display device according to claim 1, wherein,
The plurality of 2 nd interfaces include interfaces having contact terminals having elasticity, which are brought into contact with power supply terminals of an external device to receive power supplied from the external device.
6. The image display device according to claim 1, wherein,
The 1 st interface is based on the USBType-C standard,
The image display device is configured such that the connector of the 1 st interface operates in a DisplayPort alternate mode.
7. The image display device according to claim 1, wherein,
The image display device has a display section that,
The control unit obtains a power margin of the connected external battery when at least one of the 1 st interface and the 2 nd interface of the plurality of interfaces is connected to the external battery, and causes the display unit to display the obtained power margin.
8. The image display device according to claim 7, wherein,
The control unit obtains the remaining power of the internal battery, and causes the display unit to display the obtained remaining power of the external battery and the obtained remaining power of the internal battery in different display modes.
9. The image display device according to claim 7 or 8, wherein,
The control unit causes the display unit to display a power balance of the external battery and a power balance of the internal battery when the head-mounted display device is connected to the 1 st interface as an external device, an external battery is connected to any one of the 2 nd interfaces, and an operation mode of the image display device is a preset operation mode,
When the sum of the power margins of the external battery and the internal battery is equal to or less than a preset threshold value, the head-mounted display device is caused to report the sum to a user.
10. A power feeding system having an image display device that displays an image and a battery device that supplies power to the image display device, wherein,
The image display device includes:
a1 st interface capable of transmitting an image signal as an image source and receiving electric power;
a plurality of 2 nd interfaces capable of receiving electric power;
a detection unit that detects connection of an external device to the 1 st interface and the plurality of 2 nd interfaces;
An internal battery; and
A control unit for switching the interfaces,
The control unit charges the internal battery with power supplied from an external device connected to the 1 st interface when it is detected that at least one of the 1 st interface and the 2 nd interfaces is connected to an external device and that a device connected to the 1 st interface and the 2 nd interface is a supply terminal,
The plurality of 2 nd interfaces are constituted by a1 st power receiving interface that receives power supplied from the battery device and a 2 nd power receiving interface that is arranged at such a position: when the 1 st power receiving interface is connected to the battery device, a port for connecting the 2 nd power receiving interface to an external device is shielded by the battery device.
11. A feeding method of an image display device that displays an image, wherein the feeding method comprises the steps of:
Detecting connection of an external device to a1 st interface capable of transmitting an image signal as an image source and receiving power, and a plurality of 2 nd interfaces capable of receiving power; and
When it is detected that at least one of the 1 st interface and the 2 nd interfaces is connected to an external device and that a device connected to the 1 st interface and the 2 nd interface is a supply terminal, an internal battery included in the image display device is charged with electric power supplied from the external device connected to the 1 st interface.
CN202011560815.7A 2019-12-26 2020-12-25 Image display device, power feeding system, and power feeding method for image display device Active CN113050907B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019235890A JP2021106447A (en) 2019-12-26 2019-12-26 Image display device, power feeding system, and method for feeding power to image display device
JP2019-235890 2019-12-26

Publications (2)

Publication Number Publication Date
CN113050907A CN113050907A (en) 2021-06-29
CN113050907B true CN113050907B (en) 2024-06-14

Family

ID=76508182

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011560815.7A Active CN113050907B (en) 2019-12-26 2020-12-25 Image display device, power feeding system, and power feeding method for image display device

Country Status (3)

Country Link
US (1) US20210200284A1 (en)
JP (1) JP2021106447A (en)
CN (1) CN113050907B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI767438B (en) * 2020-12-09 2022-06-11 明基電通股份有限公司 Data control method and data control system
JP2023004622A (en) 2021-06-28 2023-01-17 セイコーエプソン株式会社 Timepiece component and timepiece

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101965682A (en) * 2008-02-08 2011-02-02 高通股份有限公司 Multi-mode power amplifier
CN103853007A (en) * 2012-11-29 2014-06-11 柯尼卡美能达株式会社 Image forming device and charging method for secondary battery

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007047894A (en) * 2005-08-08 2007-02-22 Omron Corp Signal control system and signal controller
US20100033018A1 (en) * 2006-10-11 2010-02-11 Panasonic Corporation Electronic equipment and charging controlling method
JP5214710B2 (en) * 2010-11-25 2013-06-19 株式会社東芝 Information processing apparatus and power supply method
CA2994874A1 (en) * 2015-08-14 2017-02-23 Icron Technologies Corporation Systems for enhancing boardroom tables to include usb type-c power and connectivity functionality
US10001983B2 (en) * 2016-07-27 2018-06-19 Salesforce.Com, Inc. Rolling version update deployment utilizing dynamic node allocation
US10725939B2 (en) * 2017-02-13 2020-07-28 Microchip Technology Incorporated Host-detecting USB hub
JP2018142764A (en) * 2017-02-27 2018-09-13 セイコーエプソン株式会社 Display system, display device, and control method of display device
JP7035510B2 (en) * 2017-12-22 2022-03-15 セイコーエプソン株式会社 Display system and control method of display system
US20220092486A1 (en) * 2019-01-09 2022-03-24 Rooda Omran AL-QEBAISI System and method of smart seating management

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101965682A (en) * 2008-02-08 2011-02-02 高通股份有限公司 Multi-mode power amplifier
CN103853007A (en) * 2012-11-29 2014-06-11 柯尼卡美能达株式会社 Image forming device and charging method for secondary battery

Also Published As

Publication number Publication date
CN113050907A (en) 2021-06-29
JP2021106447A (en) 2021-07-26
US20210200284A1 (en) 2021-07-01

Similar Documents

Publication Publication Date Title
US11310483B2 (en) Display apparatus and method for controlling display apparatus
US20180246334A1 (en) Head-mounted display device, computer program, and control method for head-mounted display device
CN113050907B (en) Image display device, power feeding system, and power feeding method for image display device
JP2019105777A (en) Head-mounted display device and method for controlling head-mounted display device
US20200264437A1 (en) Display system, control program for information processor, and control method for information processor
US10685595B2 (en) Connection device, display device, and control method for the display device
CN114356071B (en) Display system, display method, and recording medium
US20220299763A1 (en) Display system and display device
US11531508B2 (en) Data processing device, display system, and data processing method that controls the output of data based on a connection state
CN113050278B (en) Display system, display method, and recording medium
CN111488072B (en) Information processing apparatus, control method for information processing apparatus, and recording medium
CN113050279B (en) Display system, display method, and recording medium
US20170285765A1 (en) Input apparatus, input method, and computer program
US11630793B2 (en) Image display device and port arrangement
JP2017134630A (en) Display device, control method of display device, and program
CN114442801B (en) Operation method and recording medium
US11579454B2 (en) Image display device and reboot method for image display device
US20240027765A1 (en) Control device, control method for head-mounted display device, and program
CN111556310B (en) Display system, recording medium, and method for controlling information processing apparatus
JP2021057747A (en) Display system, image display device, image display method, and program

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant